:root {
  --concrete: #e9e8e4;
  --slab: #1b1b1a;
  --white: #ffffff;
  --hivis: #ff5a1f;
  --rebar: #6e6a63;
  --blueprint: #2d5bff;
  --line: #cfccc5;
  --shadow: 0 20px 40px rgba(27, 27, 26, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--concrete);
  color: var(--slab);
  font-family: "Inter Tight", system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  line-height: 1.55;
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal,
  .js .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

a,
button,
input,
select,
textarea {
  min-height: 44px;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--blueprint);
  outline-offset: 2px;
}

img {
  display: block;
  max-width: 100%;
  object-fit: cover;
}

.container {
  width: min(1200px, calc(100% - 2.4rem));
  margin-inline: auto;
}

.narrow {
  width: min(760px, calc(100% - 2.4rem));
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 1000;
  background: var(--slab);
  color: var(--white);
  border: 2px solid var(--hivis);
  padding: 0.65rem 1rem;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line);
  background: rgba(233, 232, 228, 0.95);
  backdrop-filter: blur(10px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border: 2px solid var(--slab);
  padding: 0.5rem 0.75rem;
  font-family: "Big Shoulders Display", Impact, sans-serif;
  font-size: 1.45rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border: 1px solid transparent;
  padding: 0.6rem 0.75rem;
  font-weight: 600;
}

.site-nav a[aria-current="page"] {
  border-color: var(--slab);
  background: var(--white);
}

.nav-toggle {
  display: none;
  border: 2px solid var(--slab);
  background: var(--white);
  padding: 0.5rem 0.75rem;
  font-weight: 700;
}

.section {
  padding: clamp(2.8rem, 5vw, 5rem) 0;
  position: relative;
}

.section--light {
  background: color-mix(in srgb, var(--white) 86%, var(--concrete) 14%);
}

.section--dark {
  background: var(--slab);
  color: var(--white);
}

.section--blueprint::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--blueprint) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint) 1px, transparent 1px);
  background-size: 8px 8px;
  opacity: 0.04;
  pointer-events: none;
}

.mono {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.92rem;
}

.muted {
  color: var(--rebar);
}

h1,
h2,
h3,
h4,
.display {
  margin: 0 0 0.9rem;
  font-family: "Big Shoulders Display", Impact, sans-serif;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 0.95;
}

h1 {
  font-size: clamp(2.1rem, 7.4vw, 4.8rem);
}

h2 {
  font-size: clamp(1.7rem, 4.2vw, 3rem);
}

h3 {
  font-size: clamp(1.35rem, 2.8vw, 2rem);
}

p,
li {
  margin-top: 0;
}

.hero {
  min-height: min(96vh, 860px);
  display: grid;
  align-items: end;
  position: relative;
  color: var(--white);
}

.hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(27, 27, 26, 0.8) 12%, rgba(27, 27, 26, 0.4) 58%, rgba(27, 27, 26, 0.2) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 1rem;
  padding: clamp(3.4rem, 8vh, 5rem) 0 2.4rem;
  max-width: 800px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border: 2px solid var(--slab);
  background: var(--hivis);
  color: var(--slab);
  padding: 0.72rem 1rem;
  font-weight: 800;
  font-size: 0.96rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.btn:hover {
  filter: brightness(0.95);
}

.btn--ghost {
  background: transparent;
  color: inherit;
  border-color: currentColor;
}

.btn--light {
  background: var(--white);
}

.project-sign {
  display: grid;
  border: 2px solid var(--slab);
  background: var(--white);
  box-shadow: var(--shadow);
}

.section--dark .project-sign,
.hero .project-sign {
  border-color: var(--white);
  background: rgba(27, 27, 26, 0.88);
  box-shadow: none;
}

.project-sign p {
  margin: 0;
  border-bottom: 1px solid color-mix(in srgb, currentColor 26%, transparent);
  padding: 0.62rem 0.85rem;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
}

.project-sign p:last-child {
  border-bottom: 0;
}

.project-sign span {
  display: inline-block;
  min-width: 100px;
  color: var(--hivis);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dimension-line {
  margin: 0.9rem 0 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blueprint);
  font-size: 0.8rem;
}

.section--dark .dimension-line,
.hero .dimension-line {
  color: color-mix(in srgb, var(--hivis) 84%, white 16%);
}

.dimension-line__tick {
  width: clamp(44px, 8vw, 88px);
  height: 1px;
  background: currentColor;
  position: relative;
}

.dimension-line__tick::before,
.dimension-line__tick::after {
  content: "";
  position: absolute;
  top: -4px;
  width: 1px;
  height: 9px;
  background: currentColor;
}

.dimension-line__tick::before {
  left: 0;
}

.dimension-line__tick::after {
  right: 0;
}

.stats-strip {
  background: var(--slab);
  color: var(--white);
}

.stats-strip .container {
  padding: 1.2rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
}

.stats-grid .card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.25);
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border: 2px solid var(--slab);
  background: var(--white);
  padding: 1rem;
}

.card ul {
  margin: 0;
  padding-left: 1.2rem;
}

.section--dark .card {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.22);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  gap: 0.75rem;
}

.timeline__item {
  border: 2px solid var(--slab);
  background: var(--white);
  padding: 0.9rem;
  position: relative;
}

.timeline__item::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 22px;
  height: 22px;
  border-left: 2px solid var(--blueprint);
  border-top: 2px solid var(--blueprint);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.project-card {
  border: 2px solid var(--slab);
  background: var(--white);
  display: grid;
}

.project-card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.project-card__media img {
  width: 100%;
  height: 100%;
}

.project-card__body {
  padding: 0.9rem;
  display: grid;
  gap: 0.8rem;
}

.project-meta p {
  margin: 0;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1rem 0 1.3rem;
}

.chip {
  border: 2px solid var(--slab);
  background: var(--white);
  padding: 0.45rem 0.8rem;
  font-weight: 700;
}

.chip.is-active {
  background: var(--hivis);
}

.two-col {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 1rem;
}

.project-hero__image,
.detail-gallery__item,
.before-after__images {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 2px solid currentColor;
}

.project-hero__image img,
.detail-gallery__item img,
.before-after__img {
  width: 100%;
  height: 100%;
}

.detail-gallery {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.before-after {
  margin-top: 1rem;
}

.before-after__images {
  position: relative;
}

.before-after__img {
  position: absolute;
  inset: 0;
}

.before-after__img--after {
  clip-path: inset(0 50% 0 0);
}

.before-after__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: var(--hivis);
}

.before-after__range {
  width: 100%;
  margin-top: 0.8rem;
}

.estimate-form {
  display: grid;
  gap: 0.95rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  border: 2px solid var(--slab);
  background: var(--white);
  padding: 0.6rem;
  font: inherit;
}

textarea {
  min-height: 140px;
}

.progress-line {
  border: 2px solid var(--slab);
  height: 18px;
  position: relative;
  background: var(--white);
}

.progress-line__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 12%;
  background: var(--hivis);
  transition: width 0.2s ease;
}

.history {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.history li {
  border-left: 2px solid var(--blueprint);
  padding-left: 0.8rem;
}

.site-footer {
  border-top: 2px solid var(--slab);
  background: var(--white);
  padding: 1.2rem 0;
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer__links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.site-footer__links a {
  border: 1px solid var(--slab);
  padding: 0.5rem 0.75rem;
  text-decoration: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 810px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    width: min(320px, 90vw);
    background: var(--white);
    border-left: 2px solid var(--slab);
    display: grid;
    align-content: start;
    gap: 0.15rem;
    padding: 4.2rem 1rem 1rem;
    transform: translateX(102%);
    transition: transform 0.28s ease;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav a {
    border: 1px solid var(--line);
    background: var(--concrete);
  }

  .hero {
    min-height: 80vh;
  }

  .stats-grid,
  .grid--3,
  .project-grid,
  .timeline,
  .detail-gallery,
  .form-grid,
  .grid--2,
  .two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 390px) {
  .container,
  .narrow {
    width: calc(100% - 1.4rem);
  }

  .site-logo {
    font-size: 1.2rem;
  }

  .hero__content {
    padding-bottom: 1.25rem;
  }
}


/* QA fix (Claude): the closed off-canvas nav must not widen the page; hide it fully until opened */
html, body { overflow-x: clip; }
@media (max-width: 810px) {
  .site-nav { visibility: hidden; transition: transform 0.28s ease, visibility 0s linear 0.28s; }
  .site-nav.is-open { visibility: visible; transition: transform 0.28s ease, visibility 0s; }
}